@font-face {
    font-family: 'Kaushan Script';
    src: url('../fonts/kaushan-script-v16-latin-ext-regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
}
header {
    background-image: url(../img/background-img.jpg);
    background-size: cover;
    padding-bottom: 200px;
}
menu {
    background: rgb(135, 206, 250, 0.3);
    display: flex;
    justify-content: center;
}
header .container {
    display: flex;
    justify-content: space-between;
}
header nav {
    display: flex;
}
header nav ul {
    display: flex;
}
header nav ul li {
    display: flex;
}
header nav ul li a {
    color: white;
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 0 15px;
}
header nav ul li a:hover {
    background: rgb(245, 245, 245, 0.2);
}

header nav ul li i.fa-brands.fa-facebook {
    display: flex;
    font-size: 25px;
    transition: transform 0.3s, color 0.3s;
}
header nav ul li a:hover i.fa-brands.fa-facebook {
    color: #4267B2;
    align-items: center;
    transform: scale(1.2);
}

header .nadpis {
    color: white;
    text-align: center;
    margin-top: 200px;
    text-shadow: 3px 5px 5px rgba(0, 0, 0, 0.5);
}
header .nadpis h2 {
    font-size: 70px;
    font-family: "Arial";
    border: 4px solid white;
    display: inline-block;
    padding: 7px;
}
header .nadpis h3 {
    font-size: 30px;
    font-family: "Arial";
    padding-top: 5px;
}
header .social {
    display: flex;
}
header .social a {
    display: flex;
}
header .social a i {
    color: white;
    display: flex;
    align-items: center;
}
@media (max-width: 750px) {
    header {
        padding-bottom: 20px;
    }
    header .container {
        flex-direction: column;

    }
    header nav ul {
        flex-direction: column;
    }
    header nav {
        justify-content: center;
        margin-top: 15px;
    }
    header nav ul li {
        justify-content: center;
    }
    header nav ul li a {
    padding: 10px 20px;
    }
    header a#logo {
        display: flex;
        justify-content: center;
    }
    header .nadpis {
        margin-top: 25px;
    }
    header .nadpis {
        font-size: 10vw;
    }
    header .nadpis h2 {
        font-size: 1em;
    }
    header .nadpis h3 {
        font-size: 0.4em;
    }
}